d7375ec102
What's happening is that we're holding openib_btl->eager_rdma_lock when we call mca_btl_openib_endpoint_send_eager_rdma() on btl_openib_endpoint.c:1227. This in turn calls mca_btl_openib_endpoint_send() on line 1179. Then, if the endpoint state isn't MCA_BTL_IB_CONNECTED or MCA_BTL_IB_FAILED, we call opal_progress(), where we eventually try to lock openib_btl->eager_rdma_lock at btl_openib_component.c:997. The fix removes this lock altogether. Instead we atomically set local RDMA pointer to prevent other threads to create rdma buffer for the same endpoint. And we increment eager_rdma_buffers_count atomically thus polling thread doesn't need lock around it. This commit was SVN r12369. |
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| allocator | ||
| bml | ||
| btl | ||
| coll | ||
| common | ||
| io | ||
| mpool | ||
| mtl | ||
| osc | ||
| pml | ||
| rcache | ||
| topo | ||
| win_makefile | ||